Leiden Half-Bracket Lacuna Marker Checker ((.))
Validate Leiden half-bracket corner marks U+231C-U+231F that frame partially preserved letters, counting each corner type and reporting the zero-based position of the first mismatched or unmatched corner (-1 when balanced).
Description
Validate Leiden half-bracket corner marks U+231C-U+231F that frame partially preserved letters, counting each corner type and reporting the zero-based position of the first mismatched or unmatched corner (-1 when balanced).